ATI RN
Pediatric Immunization NCLEX Questions Quizlet Questions
Question 1 of 5
Which of the following molecules is necessary (not accessory) for antigen recognition and T cell activation?
Correct Answer: B
Rationale: CD3 is essential for TCR signaling and T cell activation, unlike the accessory roles of CD4 and CD8.
Question 2 of 5
Ankylosing spondylitis
Correct Answer: A
Rationale: Ankylosing spondylitis is strongly associated with HLA-B27.
Question 3 of 5
Directly: carbohydrate, protein, lipid, nucleic acid epitopes
Correct Answer: A
Rationale: Immunoglobulins directly recognize a wide range of epitopes.
Question 4 of 5
Mutations in TAP-1 or TAP-2 may alter the function of the heterodimer TAP. Which of the following is common for patients with TAP mutations?
Correct Answer: C
Rationale: TAP mutations impair MHC Class I antigen presentation, leading to increased susceptibility to upper respiratory infections due to reduced CD8+ T cell responses.
Question 5 of 5
B cell co-receptor phosphorylation sites include Igα/Igβ and which of the following?
Correct Answer: A
Rationale: CD19 contains phosphorylation sites critical for amplifying BCR signaling.